Shuaishuai Wang, Ju Wang, Chuang Ma, Tianyu Li, Tianyuan Xie, Yang Yu, Jinlong Yu. Frequency Multiplication Signal Generation Based on Injection Locking of Directly Modulated Laser[J]. Laser & Optoelectronics Progress, 2019, 56(4): 040601
- Laser & Optoelectronics Progress
- Vol. 56, Issue 4, 040601 (2019)
Fig. 1. Simplified block diagram of injection locking
Fig. 2. Spectra in injection locking. (a) Output spectrum of ML after modulation; (b) output spectrum of SL after injection locking
Fig. 3. Structural diagram of directly modulated laser
Fig. 4. Schematic of automatic locking of directly modulated laser
Fig. 5. Experimental setup for generation of frequency doubling signals based on injection locking of direct modulated laser
Fig. 6. Results of 10 GHz frequency doubling signal. (a) Electrical spectrum, RSPAN=40 GHz; (b) electrical spectrum, RSPAN=100 MHz; (c) phase noise; (d) spectrum after automatic locking
Fig. 7. Comparison of microwave signal power changes by automatic locking and manual locking
Fig. 8. Comparison of phase noise results. (a) Microwave signals by automatic locking and manual locking; (b) microwave signals by automatic locking and manual locking after 10 min
Fig. 9. Results of 12 GHz frequency doubling signal. (a) Electrical spectrum, RSPAN=1 MHz; (b) phase noise; (c) spectrum after injection locking
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